Seth Godin is a grad from Stanford, studied marketing in the MBA school @ stanford. He has had few ventures including Yoyodyne that had online games, contests,etc in 1995, later came Change This for spreading ideas through .pdf files, Squidoo in 2006 for users to create personalized webpages which he called lenses.
After he failed in all the three ventures, he wrote books on marketing namely Free Prize Inside, Purple Cow, etc. In the video he discusses why Yahoo became a failure and Google a sucess. He presented this at Google. He is one of the best known Marketing Gurus today and every year he gets 100’s of applications for an marketing internship at his house.